Patent US2783170A successfully refreshed from Google Patents.
US2783170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic material and process of making it
Assignee: Armco Inc
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Filing: 1956-04-19
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Granted: 1957-02-26
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Expires: 1976-04-19
Abstract
No abstract record available.
Inventors
- 👤 Martin F Littmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:06
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS OF PRODUCING EXCEEDINGLY THIN MAGNETIC ALLOYS HAVING HIGH PERMEABILITY, LOW COERCIVE FORCE AND RECTANGULAR HYSTERESIS LOOP CHARACTERISTICS, WHICH COMPRISES REDUCING AN ALLOY CONTAINING 80$2% NICKEL AND 4.0$.3% MOLYBDENUM, BALANCE SUBSTANTIALLY ALL IRON, TO A THICKNESS LESS THAN 1 MIL AND SUBJECTING THE REDUCED MATERIAL TO AN ANNEAL IN AN ATMOSPHERE PREDOMINANTLY OF HYDROGEN AND HAVING A DEW POINT BELOW -40*C. AT A TEMPERATURE OF SUBSTANTIALLY 750* TO 1050*C.
Claim 2
Dependent Claim
70 words
A PROCESS OF PRODUCING EXCEEDINGLY THIN MAGNETIC ALLOYS HAVING HIGH PERMEABILITY, LOW COERCIVE FORCE AND RECTANGULAR HYSTERESIS LOOP CHARACTERISTICS, WHICH COMPRISES REDUCING AN ALLOY CONTAINING 80$2% NICKEL AND 4.0$.3% MOLYBDENUM, BALANCE SUBSTANTIALLY ALL IRON, TO A THICKNESS LESS THAN 1 MIL AND SUBJECTING THE REDUCED MATERIAL TO AN ANNEAL IN AN ATMOSPHERE PREDOMINANTLY OF HYDROGEN AND HAVING A DEW POINT BELOW -40*C. AT A TEMPERATURE OF SUBSTANTIALLY 750* TO 1050*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |